Presser-foot for shoe-sewing machines.



APPLICATION FILED APR-1|. I9l6.

Patented Nov. 21, 1916.

UNITED STATES ALFRED BUGOLO, OF WASHINGTON, DISTRICT OF COLUMBIA.

PRESSEB-FOOT FOR SHOE-SEWING MACHINES.

Specification of Letters Patent.

latcnted Nov. 21, 1916.

Application filed April 11, 1916. Serial No. 90,454;-

To all whom it may concern.

Be it known that I, ALFRED BUCOLO, a citizen of the United States, residing at \Vashington, in the District of Columbia, have invented new and useful Improvements in Presser-Feet for Shoe-Sewing Machines, of which the-following is a speci fieation.

This invention relates to an. improved prcsser foot for lock stitch shoe sole sewing machines commonly known as Goodyear welt machines. and particularly designed and mnployed for sewing on the outersole of a shoe.

The object of the present invention is to provide a novel construction of presser foot \\'l1l"ll is designed and adapted, in addition to its ordinary function of holding the material, to form the welt groove or receiving channel in the outer sole wherein the stitches are received and to close the channel or groove after the stitching is done, all in a single continuous operation.

A further object of the invention is to provide a presser foot of the character defined which may be applied to machines of the Goodyear welt type in common use'in;

place of the ordinary presser foot.

The invention consists of the features of constructimi, combination and arrangement of parts hereinafter fully described and claimed. reference being had to the accompanying drawingin which Figure 1 is' a front elevation showing the application of the invention to cooperating parts of a (ioodycar welt machine, showing only so much of the machine structure as'is necessary to .a proper understanding of the invention. Fig. 2 is a sectional plan view of the same. Fig. 3 is a perspective view of the presscr foot detached. Fig. 4 is a side elevation of the same. Fig. 5 is a bottom plan view of the p'ressci' foot. Fig. (i is a perspective view of a portion of a sewed sole, illustrating the operation of the iv'resser foot.

Referring to the drawing, 1 designates the table, 2 the sole guide, and 3 the presser foot head-of a sewing machine. of the construc tion set forth, the said table 1 being provided with the eye or opening 4 for the passage of the needle, and a handle 5 being provided for adjusting the presser foot head inio and out of lanuiing position as in the usual manner.- These parts may be of the construction in common use in Goodyear welt machincsof the general type employed.

In welt machines of the character set forth, it has been customary to use either a plain presseifoot for external seam-work, or a presser foot with a cutter blade attachment forchannel welt work, and in the use of a presser foot witha channel forming blade the channel is cut andthe sewing carried on in one operation, after which the shoe with the attached sole is removed and the channel closed by heating or pressing down the free wall or welt strip ofthe channel, a hanimer being conhaonly employed. This is a tedious and objectionable operation, and the prin'ia-ry purpose of my in vcntion is to provide a presser foot which will cut the channel and afterstitching automatically close the channel so that the operation of forming thechannel, stitching the sole to the shoe and closing the channel will be simultaneously performed. i

In carrying my invention into practice, I provide a presser foot 6 which comprises a body portion 7 in the form of a plate perforated for the passage of suitable fastenings 8 tosecure it to the head 3 in the usual manner- .1 This body portion 7 is also provided as usual with a depending arm 8 tern'iinating in a laterally projecting and horizontally disposed foot portion 9 which bears .upon the sole to hold it in-position. The forward portion of this foot 9 is provided with :1 depending channel forming cutter 10, which extends longitudinally at right angles, to the body portion 7, but in a plane parallel 'with the edge of the sole of the shoe in the sewing operation. This cutter 10 is preferably integral with thepresser foot and triangular or V-shaped in cross section to form a correspondingly shaped channel or groove 11in the shoe sole, and one of the surfaces of this cutter, as shown at 12, is arranged at an oblique angle to raise or elevate the free wall or welt strip 13 of the channel, to open the channel in the cutting operation.

In the use of the device as thus far described, it will be understood that the shoe with the outcr solc applied and held in place by temporary 'l'astcuings is brought into position between the table and the raised presser foot and the presser foot then depressed into operative position. The machine is then set into action and the shoe op erated to feed the sole to bring the marginal portion thereof throughout in line with the sewing mechanism for the stitching action, the outer portions of the threads 1 being received in the channel 11 formed in the sole l5 by'the action of the cutter 10, which in the feeding movement of the sole forms the welt channel, the groove being formed in the sole at a point just in advance of the needle 16.

The presser foot is provided with means for depressing the marginal strip 13 of the welt channel for the purpose of closing the channel at a point immediately in rear of theneedle as the stitching is completed. The means for performing this function comprises an arm 17 which projects laterally from the foot 9 at a point in rear of the cutter carrying portion of said foot and of thepivorking plane of the needle lb, which armllT is provided at its free end with a presser' blade 18, projecting forwardly at an angle to the arm and at right angles to the line lof cutting motion of the cutter 10, so as to,,follow said cutter, in the relative cuttingfmotion between the cutter and sole, to engage and depress the strip 13 just assoon as the needle it completes its sewing action at ia iy given point. It will be evident, therefore, that as the sole moves beneath the presser foot the groove or channel will be cntiitherein. the needle l6 will then act to stitch the sole to the shoe. in line with the groove, the outer portions of the thread stitches being formed within the groove, and that the presser blade 18 will then depress the;strip 13 to close the channel. For the purpose of holding the channel closed, cement may be used, if desired, but in practice it has been found that the wax upon the waxed thread will be sutlicient to hold the strip in its natural position, which, in fact, requires little or no aid in the way of securing means to maintain it closed so as to lie full within the plane of the surface of the sole. l v the operation above described, it will be seen that the presserfoot will hold the sole in the usual manner, while it will cut the welt channel in advance of the action of the sewing devices and will then close the channel, thus avoiding the necessity of malting this a separate operation upon the removal of the shoe from the machine.

From the foregoing description, taken in connection with the drawing, the construction and mode of use ot in v improved presser foot will be readily understood, and it will be seen that my invention provides a device of this character which will perform the described functions in a simple, reliable and eliicient manner, and which may be applied to any ordinary Goodyear welt machine to take the place of the ordinary presser foot commonly employed. It will also be seen that the improved presser foot will both form and close the channel, thus dispensing with the usual separate and independent channel closing operation, while at the same time depressing the strip 13 so that it will lie smoothly in place. By forming the cutter 10 integral with the presser foot greater rigidity is secured and all liability of the "cutter getting out of proper position with relation to the sewing mechanism is avoided.

I claim 1. A presser foot for sole stitching machines comprising a foot proper, an attachiug bracket carried thereby, a cutter of wedge-form arranged at one side of the center of the foot proper for cutting a welt channel, said cutter being provided with an oblique lateral face to lift thewelt strip of the channel and thereby open the channel for the stitching action, an arm projecting rearwardlyljtrom the foot proper on the op posite side of the center thereof from the cutter, and a curved blade carried by said arm and extending transversely in rear of the cutter and in spaced relation thereto, for closing the welt strip subsequent to the stitching action. I

2. A presser foot for sole stitching machines comprising a foot proper, an attaching bracket integral therewith, a cutter of wedge-fm'm arranged at one side of the center of the footproper and formed integral therewith for cutting a welt channel, said cutter being provided with an oblique lateral face to lift the welt strip of the channel and thereby open the clr'aniiel for the stitching action. an arm projecting rearwardly from the foot proper on the opposite side of the center thereof from the cutter, and a curved blade integral with said arm and extending transversely in rear of the cutter and in spaced relation thereto, for closing the welt strip subsequent to the stitching action.

lintcstimonv whereof I atlix my signature in presence of a witness.

. ALFRED BUCOLO.

Witness:

llnxxn'r'r S. Jones. 

